I have Elektra #1 installed and running in the dining room.
Question 1: I'm starting to seriously think about installing a PID for three reasons.
1. The Sirai pstat is kind of noisy when it clicks on and off. This is a minor point but bothersome nonetheless.
2. I'm nervous about having only one device preventing an overpressure and potentially water leak into my dining room. In theory the catch cup and drain line for the OPV should prevent a mess but I'm not convinced my machine's drain box and 1/2" OD drain line will actually catch everything.
(I've already had a mini flood. That was actually traced to too much drain line extending outside the house which got iced up. But the old drain box, upon inspection, has some cracks that limit its capacity. I switched from 3/8" OD drain line to 1/2" OD line, cut shorter, and a new drain box is on order. For now, I have a drip tray under the machine.)
3. I think it might extend the life of the new and rather pricey Sirai pstat.
So, what would you all recommend for a simple and economical PID setup? What parts, which vendor?
I'm okay with attaching a temperature sensor to the outside of the boiler. I don't feel the need to know the exact temperature inside the boiler and I suspect the difference between outside and inside temp will be fairly consistent.
I would prefer everything be internal to the machine or tucked neatly beneath it (it has tall legs). My wife doesn't want the dining room to look like a laboratory!
Question 2: I'm also thinking about installing the heating element safety switch. I had to replace the old heating element after it shorted, and that was also an expense of I would prefer not to repeat, to say nothing of the flash and pop and tripped breaker. If the water level sensor fails and fries this new element, I could also lose the $100 water heater timer that the machine is wired to.
So, any issue running the safety switch with the PID? I assume the switch is just wired in series with the SSR?